The goal of Terabit/s throughput using multiple spot beam high throughput satellite (HTS) systems requires the development of new techniques, technologies [2]. Current solutions use the conventional four color scheme. Due to the fact, that frequency is a scarce resource, the available spectrum needs to be reused as much as possible to increase throughput. This leads to a high level of intra-system interference between the co-channel beams. Joint processing of the signals intended to the different beams can be carried out at the transmitter (usually the gateway or hub) for interference management. This processing, is referred to under the generic term precoding, which ‘reverts’ the impact of the satellite RF channel and interferences.
The objective is to develop a comprehensive software simulation platform (the demonstrator) that will prove the concept of precoding in the forward link of DVB-S2X based broadband interactive satellite system. The demonstrator will provide a powerful tool in support of the design of next generation broadband systems that aggressively re-use the available system bandwidth. DVB recently issued the DVB-S2 extension (DVB-S2X) with an optional specification that provides the necessary framing and signaling support to interference management techniques (like precoding). Thereby, all elements to support precoding in terms of physical layer have been put in place and the technique is awaiting a proof-of-concept.
References
[1] Technical Proposal, “Precoding Demonstrator for Broadband System Forward Links (PreDem)”, ITT AO/1-7882/14/NL/US, Proposal No 3012061 – ARTES-5.1, 20. October 2014. [2] Statement of Work, “Precoding Demonstrator for Broadband System Forward Links”, ARTES 5.1, Workplan 2011, Item 6B.023, 07. April 2014.
Partners
Project Duration
06.03.2015 – 31.07.2018
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